After running ./configure successfully, I do

$ unsermake

cd . && /bin/sh ./config.status config.h
config.status: creating config.h
config.status: config.h is unchanged
linking ./amarok/src/libamarok.la
/bin/sh ./libtool --silent --mode=link --tag=CXX g++ -Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -Wchar-subscripts -Wall -W -Wpointer-arith -O2 -Wformat-security -Wmissing-format-attribute -Wno-non-virtual-dtor -fno-exceptions -fno-check-new -fno-common -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION -DQT_THREAD_SUPPORT -D_REENTRANT -L/usr/lib -L/usr/share/qt3/lib -L/usr/X11R6/lib -R /usr/lib -R /usr/lib -R /usr/share/qt3/lib -R /usr/X11R6/lib -o ./amarok/src/libamarok.la -rpath /usr/lib ./amarok/src/amarokcore/libamarokcore.la ./amarok/src/analyzers/libanalyzers.la ./amarok/src/engine/libengine.la ./amarok/src/plugin/libplugin.la ./amarok/src/statusbar/libstatusbar.la ./amarok/src/metadata/libmetadata.la -lkutils -lkio -lkdeui -lkdecore -lkhtml -lknewstuff -L/usr/local/lib -ltag -lGL ./amarok/src/sqlite/libsqlite.la ./amarok/src/Options1.lo ./amarok/src/Options2.lo ./amarok/src/Options4.lo ./amarok/src/Options5.lo ./amarok/src/Options7.lo ./amarok/src/Options8.lo ./amarok/src/actionclasses.lo ./amarok/src/app.lo ./amarok/src/browserbar.lo ./amarok/src/clicklineedit.lo ./amarok/src/collectionbrowser.lo ./amarok/src/collectiondb.lo ./amarok/src/configdialog.lo ./amarok/src/contextbrowser.lo ./amarok/src/coverfetcher.lo ./amarok/src/covermanager.lo ./amarok/src/pixmapviewer.lo ./amarok/src/cuefile.lo ./amarok/src/dbsetup.lo ./amarok/src/devicemanager.lo ./amarok/src/directorylist.lo ./amarok/src/effectwidget.lo ./amarok/src/enginecontroller.lo ./amarok/src/engineobserver.lo ./amarok/src/equalizergraph.lo ./amarok/src/equalizerpresetmanager.lo ./amarok/src/equalizersetup.lo ./amarok/src/fht.lo ./amarok/src/filebrowser.lo ./amarok/src/firstrunwizard.lo ./amarok/src/htmlview.lo ./amarok/src/k3bexporter.lo ./amarok/src/kbookmarkhandler.lo ./amarok/src/ktrm.lo ./amarok/src/mediabrowser.lo ./amarok/src/metabundle.lo ./amarok/src/multitabbar.lo ./amarok/src/moodbar.lo ./amarok/src/newdynamic.lo ./amarok/src/osd.lo ./amarok/src/party.lo ./amarok/src/partydialogbase.lo ./amarok/src/playerwindow.lo ./amarok/src/playlist.lo ./amarok/src/playlistbrowser.lo ./amarok/src/playlistbrowseritem.lo ./amarok/src/playlistitem.lo ./amarok/src/playlistloader.lo ./amarok/src/playlistselection.lo ./amarok/src/playlistwindow.lo ./amarok/src/pluginmanager.lo ./amarok/src/podcastsettings.lo ./amarok/src/podcastsettingsbase.lo ./amarok/src/prettypopupmenu.lo ./amarok/src/queuemanager.lo ./amarok/src/refreshimages.lo ./amarok/src/scancontroller.lo ./amarok/src/scriptmanager.lo ./amarok/src/scriptmanagerbase.lo ./amarok/src/scrobbler.lo ./amarok/src/sliderwidget.lo ./amarok/src/smartplaylisteditor.lo ./amarok/src/socketserver.lo ./amarok/src/statistics.lo ./amarok/src/streamprovider.lo ./amarok/src/systray.lo ./amarok/src/tagdialog.lo ./amarok/src/tagdialogbase.lo ./amarok/src/tagguesser.lo ./amarok/src/tagguesserconfigdialog.lo ./amarok/src/threadweaver.lo ./amarok/src/tracktooltip.lo ./amarok/src/trackpickerdialog.lo ./amarok/src/trackpickerdialogbase.lo
./amarok/src/amarokcore/.libs/libamarokcore.a(main.:(.bss+0x0): multiple definition of `aboutData\'
./amarok/src/.libs/app.o:/home/larsbjar/amarok-svn/amarok/src/app.cpp:291: first defined here
collect2: ld returned 1 exit status
Error creating ./amarok/src/libamarok.la. Exit status 1.

Anyone who can help? How hard can it be?

make sure you start with a clean source directory:
- make clean
- find . -name \'*.o\' | xargs rm
- find . -name \'*.la\' | xargs rm
- find . -name \'.libs\' | xargs rm -rf
and then try again.